Altus NR3

Compact GNSS Rover for Surveying & GIS Applications

******** Note: product with limited availability. ********
Orders accepted until, and not later than February 28, 2023 (last time buy date, subject to availability)

  • Robust, light and portable GNSS receiver
  • Quad-constellation, multi-frequency, all-in-view RTK positioning
  • AIM+ anti-jamming and monitoring system
  • Easy setup and one-touch logging
  • All-in-one base and rover operation
  • 4G/LTE connectivity


The Altus NR3 combines easy-to-use, multi-frequency, quad-constellation RTK with an unrivalled communications toolset for a successful survey or GIS project every time. It incorporates leading GNSS and wireless technology into a sleek and compact design.

AIM+ anti-jamming and monitoring system

AIM+ offers built-in protection against intentional and unintentional jamming using a sophisticated system of sampling and mitigation mechanisms. The Altus NR3 can suppress the widest variety of interferers from simple continuous narrow-band signals to the more complex wide band and pulsed transmitters as well as lnmarsat and Iridium satellite transmissions. 

The GNSS+ toolkit - Septentrio’s suite of algorithms to convert bad measurements into good positioning

Mechanical vibrations or shocks caused by rough terrain can wreak havoc with satellite tracking. LOCK+ automatically adjusts the tracking loop parameters of the Altus NR3 Smart Antenna so you never lose position.

Activity in the ionosphere is a problem for GNSS signals, from loss of RTK fix to total loss of signal lock. Having honed our skills in the most iono-active areas on Earth, the result is IONO+: the most advanced protection against ionospheric disturbances to GNSS signals on any receiver.

Metal and large nearby structures can reflect GNSS signals and produce multipath. The APME+ system disentangles direct and reflected signals enhancing both position and measurement quality. APME+ is bias free and, in line with Septentrio’s commitment to maximum configurability, can be disabled.

Advanced Receiver Autonomous Integrity Monitoring (RAIM+) comprises fault detection mechanisms of the receiver at all the levels including the generation of measurements, quality control and navigation algorithms. Detected faulty measurements, which are typically caused by high multipath or active ionosphere, are removed from the solution.


GNSS technology

More info


NavIC: L5
QZSS: L1, L2, L5

Septentrio’s patented GNSS+ technologies

AIM+ Advanced Interference Monitoring and Mitigation
More info


Unique anti-interference system monitors, flags and mitigates narrow and wideband interference, jamming and spoofing.

More info


Hi-speed serial ports (RS232)
Ethernet port (TCP/IP, UDP, LAN 10/100 Mbps)
More info
Direct IP and data call (CDS) calling and accepting mode
More info

Allows communication between base and rover

High-speed/full-speed USB device port
Internal memory (GB)
NTRIP (v1 and v2) client server and caster
EU 4G LTE model
More info

4G compatibility in Europe and other regions: 4G LTE CAT4 (B1, B3, B5, B7, B8, B20), 3G UMTS/HSDPA/HSUPA (850/900/1900/2100), 2G GSM/GPRS/EDGE (850/900/1800/1900)

NA 4G LTE model
More info

4G compatibility in North America and other regions: 4G LTE CAT4 (B2, B4, B5, B7, B17), 3G UMTS/HSDPA/HSUPA (850/900/AWS1700/1900/2100), 2G GSM/GPRS/EDGE (850/900/1800/1900)

Integrated position accuracy

Standalone - horizontal
More info

Open-sky conditions. RMS levels.

1.2 m
Standalone - vertical
1.9 m
SBAS - horizontal
0.6 m
SBAS - vertical
0.8 m
DGNSS - horizontal
0.4 m
DGNSS - vertical
0.7 m

Support documentation

Firmware 1.4.1 upgrade notice

  • The upgrade to the Altus NR3 1.4.1 firmware can be done using the Web Interface over USB or WiFi. Using RxTools (RxControl or RxUpgrade) to upgrade the 1.4.1 will fail.

Control Software

End Of Life Notification 2022-09-30 Altus NR3
167.76 KB
Altus NR3 Firmware v1.4.2 Release Notes
85.62 KB
Altus NR3 Firmware Package v1.4.2
58.17 MB
Altus NR3 Firmware v1.4.2 Reference Guide
1.82 MB
Altus NR3 Quick Start Guide
1.74 MB
Altus NR3 Application Note SurvCE
1011.06 KB
Differences between Altus NR2 and Altus NR3​​
130.21 KB
Altus NR3 User Manual v1.5
8.78 MB
3D drawing
18.26 MB

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